JNR steam locomotive D51, nicknamed "Degoichi". Introduced in 1935, it is Japan's leading steam locomotive, with the largest number of 1115 cars manufactured in Japan. As a steam locomotive suitable for Japanese railways, it was a great success for both passenger trains and freight trains, from main lines to sub-main lines. Since it has been produced for a long time, it can be roughly divided into two styles called primary form and standard form.
In the 1965's, the place where steam locomotives were active was narrowed due to the modernization of power and the progress of electrification on trunk lines in various places. Immediately before the SL boom that captures the brave figure of the disappearing steam locomotive in the picture occurs, at the highest point of the Tohoku Main Line, Jusohonki Pass, it is called D51 Triple Ren to tow a 1000t heavy freight train. A hard run was unfolding. Unlike the Hakubi line triple-heading during the SL boom, it was a triple-heading on the northern main line, but not many people have visited it yet, and it appeared in the timetable revision due to electrification in October 1968. I erased.